Functions for generating a summary of enabled/disabled features.
These functions can be used to generate a summary of enabled and disabled packages and/or feature for a build tree such as:
-- The following OPTIONAL packages have been found:
LibXml2 (required version >= 2.4), XML processing lib, <http://xmlsoft.org>
* Enables HTML-import in MyWordProcessor
* Enables odt-export in MyWordProcessor
PNG, A PNG image library., <http://www.libpng.org/pub/png/>
* Enables saving screenshots
-- The following OPTIONAL packages have not been found:
Lua51, The Lua scripting language., <http://www.lua.org>
* Enables macros in MyWordProcessor
Foo, Foo provides cool stuff.
The global property FeatureSummary_PKG_TYPES defines the type of packages used by FeatureSummary.
The order in this list is important, the first package type in the list is the least important, the last is the most important. the of a package can only be changed to higher types.
The default package types are , RUNTIME, OPTIONAL, RECOMMENDED and REQUIRED, and their importance is RUNTIME < OPTIONAL < RECOMMENDED < REQUIRED.
The global property FeatureSummary_REQUIRED_PKG_TYPES defines which package types are required.
If one or more package in this categories has not been found, CMake will abort when calling feature_summary() with the ‘FATAL_ON_MISSING_REQUIRED_PACKAGES’ option enabled.
The default value for this global property is REQUIRED.
The global property FeatureSummary_DEFAULT_PKG_TYPE defines which package type is the default one. When calling feature_summary(), if the user did not set the package type explicitly, the package will be assigned to this category.
This value must be one of the types defined in the FeatureSummary_PKG_TYPES global property unless the package type is set for all the packages.
The default value for this global property is OPTIONAL.
The global property FeatureSummary_<TYPE>_DESCRIPTION can be defined for each type to replace the type name with the specified string whenever the package type is used in an output string.
If not set, the string “<TYPE> packages” is used.
feature_summary( [FILENAME <file>]
[APPEND]
[VAR <variable_name>]
[INCLUDE_QUIET_PACKAGES]
[FATAL_ON_MISSING_REQUIRED_PACKAGES]
[DESCRIPTION "<description>" | DEFAULT_DESCRIPTION]
[QUIET_ON_EMPTY]
WHAT (ALL
| PACKAGES_FOUND | PACKAGES_NOT_FOUND
| <TYPE>_PACKAGES_FOUND | <TYPE>_PACKAGES_NOT_FOUND
| ENABLED_FEATURES | DISABLED_FEATURES)
)
The feature_summary() macro can be used to print information about enabled or disabled packages or features of a project. By default, only the names of the features/packages will be printed and their required version when one was specified. Use set_package_properties() to add more useful information, like e.g. a download URL for the respective package or their purpose in the project.
The WHAT option is the only mandatory option. Here you specify what information will be printed:
For each package type <TYPE> defined by the FeatureSummary_PKG_TYPES global property, the following information can also be used:
With the exception of the ALL value, these values can be combined in order to customize the output. For example:
feature_summary(WHAT ENABLED_FEATURES DISABLED_FEATURES)
If a FILENAME is given, the information is printed into this file. If APPEND is used, it is appended to this file, otherwise the file is overwritten if it already existed. If the VAR option is used, the information is “printed” into the specified variable. If FILENAME is not used, the information is printed to the terminal. Using the DESCRIPTION option a description or headline can be set which will be printed above the actual content. If only one type of package was requested, no title is printed, unless it is explicitly set using either DESCRIPTION to use a custom string, or DEFAULT_DESCRIPTION to use a default title for the requested type. If INCLUDE_QUIET_PACKAGES is given, packages which have been searched with find_package(... QUIET) will also be listed. By default they are skipped. If FATAL_ON_MISSING_REQUIRED_PACKAGES is given, CMake will abort if a package which is marked as one of the package types listed in the FeatureSummary_REQUIRED_PKG_TYPES global property has not been found. The default value for the FeatureSummary_REQUIRED_PKG_TYPES global property is REQUIRED.
The FeatureSummary_DEFAULT_PKG_TYPE global property can be modified to change the default package type assigned when not explicitly assigned by the user.
If the QUIET_ON_EMPTY option is used, if only one type of package was requested, and no packages belonging to that category were found, then no output (including the DESCRIPTION) is printed or added to the VAR variable.
Example 1, append everything to a file:
include(FeatureSummary)
feature_summary(WHAT ALL
FILENAME ${CMAKE_BINARY_DIR}/all.log APPEND)
Example 2, print the enabled features into the variable enabledFeaturesText, including QUIET packages:
include(FeatureSummary)
feature_summary(WHAT ENABLED_FEATURES
INCLUDE_QUIET_PACKAGES
DESCRIPTION "Enabled Features:"
VAR enabledFeaturesText)
message(STATUS "${enabledFeaturesText}")
Example 3, change default package types and print only the categories that are not empty:
include(FeatureSummary)
set_property(GLOBAL APPEND PROPERTY FeatureSummary_PKG_TYPES BUILD)
find_package(FOO)
set_package_properties(FOO PROPERTIES TYPE BUILD)
feature_summary(WHAT BUILD_PACKAGES_FOUND
Description "Build tools found:"
QUIET_ON_EMPTY)
feature_summary(WHAT BUILD_PACKAGES_NOT_FOUND
Description "Build tools not found:"
QUIET_ON_EMPTY)
set_package_properties(<name> PROPERTIES
[ URL <url> ]
[ DESCRIPTION <description> ]
[ TYPE (RUNTIME|OPTIONAL|RECOMMENDED|REQUIRED) ]
[ PURPOSE <purpose> ]
)
Use this macro to set up information about the named package, which can then be displayed via FEATURE_SUMMARY(). This can be done either directly in the Find-module or in the project which uses the module after the find_package() call. The features for which information can be set are added automatically by the find_package() command.
Example for setting the info for a package:
find_package(LibXml2)
set_package_properties(LibXml2 PROPERTIES
DESCRIPTION "A XML processing library."
URL "http://xmlsoft.org/")
# or
set_package_properties(LibXml2 PROPERTIES
TYPE RECOMMENDED
PURPOSE "Enables HTML-import in MyWordProcessor")
# or
set_package_properties(LibXml2 PROPERTIES
TYPE OPTIONAL
PURPOSE "Enables odt-export in MyWordProcessor")
find_package(DBUS)
set_package_properties(DBUS PROPERTIES
TYPE RUNTIME
PURPOSE "Necessary to disable the screensaver during a presentation")
add_feature_info(<name> <enabled> <description>)
Use this macro to add information about a feature with the given <name>. <enabled> contains whether this feature is enabled or not. It can be a variable or a list of conditions. <description> is a text describing the feature. The information can be displayed using feature_summary() for ENABLED_FEATURES and DISABLED_FEATURES respectively.
Example for setting the info for a feature:
option(WITH_FOO "Help for foo" ON)
add_feature_info(Foo WITH_FOO "The Foo feature provides very cool stuff.")
The following macros are provided for compatibility with previous CMake versions:
set_package_info(<name> <description> [ <url> [<purpose>] ])
Use this macro to set up information about the named package, which can then be displayed via feature_summary(). This can be done either directly in the Find-module or in the project which uses the module after the find_package() call. The features for which information can be set are added automatically by the find_package() command.
set_feature_info(<name> <description> [<url>])
Does the same as:
set_package_info(<name> <description> <url>)
print_enabled_features()
Does the same as
feature_summary(WHAT ENABLED_FEATURES DESCRIPTION "Enabled features:")
print_disabled_features()
Does the same as
feature_summary(WHAT DISABLED_FEATURES DESCRIPTION "Disabled features:")